Spectral shaping for non-Gaussian source spectra in optical coherence tomography

被引:103
作者
Tripathi, R
Nassif, N
Nelson, JS
Park, BH
de Boer, JF
机构
[1] MIT, Dept Elect Engn & Comp Sci, Cambridge, MA 02139 USA
[2] Univ Calif Irvine, Beckman Laser Inst & Med Clin, Irvine, CA 92612 USA
[3] Harvard Univ, Sch Med, Boston, MA 02114 USA
[4] Massachusetts Gen Hosp, Wellman Labs Photomed, Boston, MA 02114 USA
关键词
Digital signal processing - Diodes - Image quality - Light modulation - Luminescence - Optical transfer function - Signal to noise ratio - Tomography;
D O I
10.1364/OL.27.000406
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
We present a digital spectral shaping technique to reduce the sidelobes (ringing) of the axial point-spread function in optical coherence tomography for non-Gaussian-shaped source spectra. The spectra of two superluminescent diodes were combined to generate a spectrum with significant modulation. Images of onion cells demonstrate the improved image quality in a turbid biological sample. A quantitative analysis of the accompanying penalty in signal-to-noise ratio is given. (C) 2002 Optical Society of America.
引用
收藏
页码:406 / 408
页数:3
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